“Reduce, reuse and recycle”, this popular environmental slogan tells us how to reduce the amount of rubbish that ends up in landfills. The slogan is being used to deal with one possibly dangerous form of electronic junk, such as old computers, cellphones, and televisions. But this process of managing e-waste may be used in an unscrupulous way more often than not, a recent report suggests. “Many of these materials are being sent to developing nations under the excuse for reuse-to bridge the digital divide,” said Richard Gutierrez, a policy researcher. One of the problems is that no one proves whether these old machines work before they hit the seaways. Because of this, the report says, e-waste is a growing problem in Lagos, Nigeria, and elsewhere in the developing worlD. Much of the waste ends up being thrown away along rivers and roads. Often it’s taken apart by poor people, who may face dangerous exposure to poisonous chemicals in the equipment. Tradesmen also pay workers a little money to get materials back such as gold and copper. This low-tech recovery process could expose workers and the local environment to many dangerous materials used to build electronics. According to Gutierrez, this shadow economy exists because the excuse for recycling and reusing electronics gives businessmen “a green passport” to ship waste around the globE. “Developing nations must take on some of the responsibility themselves,” Gutierrez saiD. But he added, “a greater part of this responsibility should fall on the exporting statE.” China, for example, has become a dumping place for large amounts of e-wastE. The nation is beginning to take action to stop the flow of dangerous materials across its borders. The Chinese government, after many years of denials, is finally beginning to take the leaD. 71. The underlined word “unscrupulous” in the second paragraph most probably means “_____” A. efficient B. profitable C. unbelievable D. dishonest 72. What does the fourth paragraph mainly discuss? A. Old computers and TVs still work before they are sent abroaD. B. Poor people break up e- waste to collect some valuable materials C.A.lot of e-waste is dumped in developing countries D. The problem of e-waste is growing in developing countries 73. According to what Gutierrez said, we can learn that ________. A. exporting countries should mainly be responsible for the e- waste problem B. neither developed nor developing countries should be blamed for the e-waste problem C. developing countries should mainly be responsible for the e-waste problem D. developing countries should not be blamed for the e-waste problem 74. It can be inferred from the last paragraph that ________. A. China has hidden a large amount of e-waste in many secret places B. China has greatly changed its idea about the problem of e-waste C. China has prevented poisonous materials from entering China for a long time D. China is falling behind other countries in dealing with e-waste 75. The passage mainly tells us that _______. A. developing countries are facing serious environmental problems B. e-waste is a growing problem in developed countries C. e-waste is sent to developing countries under the excuse for reuse D. developing countries are making full use of e-waste